Mon May 20 14:46:08 EDT 2024

Wyoming Black Hills-
Including Sundance and Four Corners
1245 PM MDT Mon May 20 2024

.TONIGHT...
Sky/weather.........Cloudy. Rain showers in the evening, then 
                    chance of rain showers after midnight. 
Chc of wetting rain.50 percent. 
LAL.................1. 
Min temperature.....Around 39. 
Max humidity........90-98 percent. 
20-foot winds.......East around 5 mph shifting to the northeast 
                    after midnight. 
Haines Index........2 very low potential for large plume dominated 
                    fire growth. 
Transport winds.....East 10 to 15 mph. 
Smoke dispersal.....Poor. 
Mixing height.......600 to 700 ft agl. 

.TUESDAY...
Sky/weather.........Mostly cloudy. Rain showers likely in the 
                    morning, then rain showers and slight chance of 
                    thunderstorms in the afternoon. 
Chc of wetting rain.70 percent. 
LAL.................1 until 1200, then 3. 
Max temperature.....47-53. 
Min humidity........58-72 percent. 
20-foot winds.......North 5 to 10 mph. 
                    Gusts to around 20 mph in the afternoon. 
Haines Index........2 very low potential for large plume dominated 
                    fire growth. 
Transport winds.....North around 20 mph. 
Smoke dispersal.....Fair. 
Mixing height.......2600 to 3300 ft agl. 

.TUESDAY NIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy. 
                    Chance of showers and thunderstorms in the 
                    evening, then slight chance of showers and 
                    thunderstorms after midnight. 
Chc of wetting rain.30 percent. 
LAL.................3 until 2400, then 2. 
Min temperature.....Around 36. 
Max humidity........87-99 percent. 
20-foot winds.......West 5 to 10 mph shifting to the southwest 
                    after midnight. 
Haines Index........2 very low potential for large plume dominated 
                    fire growth. 
Transport winds.....Northwest around 20 mph shifting to the 
                    southwest after midnight. 
Smoke dispersal.....Poor. 
Mixing height.......200 to 300 ft agl. 

.WEDNESDAY...
Sky/weather.........Mostly sunny. Slight chance of rain showers 
                    through the day. 
Chc of wetting rain.0 percent. 
LAL.................1. 
Max temperature.....59-67. 
Min humidity........28-36 percent. 
20-foot winds.......Southwest 5 to 10 mph. 
                    Gusts to around 20 mph in the afternoon. 
Haines Index........5 moderate potential for large plume dominated 
                    fire growth. 
Transport winds.....Southwest 30 to 35 mph. 
Smoke dispersal.....Good increasing to excellent in the afternoon. 
Mixing height.......7200 to 9000 ft agl. 


.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Slight chance of showers. Lows in the
mid 40s. Highs in the mid 60s. Southwest winds 15 to 20 mph. 
.FRIDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 30s. Highs in the upper 50s. West
winds 15 to 20 mph. 
.SATURDAY...Warmer. Mostly clear. Slight chance of showers. Lows
in the lower 40s. Highs around 70. South winds around 10 mph. 
.SUNDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 60s. 
.MEMORIAL DAY...Partly cloudy. Chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the
lower 60s.